My friend bought a eVGA 6800gt and is planning on selling it to me for $370, because he cannot overclock it past 380/1050(I think those were the numbers)...he put it in a shuttle with a 250w power supply....I was wondering if this is a good deal, considering the problem he had...I honestly am not sure if there is a -huge- performance difference between 380/1050 and the 400/1100 speed of an ultra...I probably would have only set it at 370/1000 because I don't want it to burn out sooner...if someone can tell me if its a good deal, if the problem he had is because of his power supply, and if there is a big performance difference I'd be very glad...thanks